PC rod guide with rotor ridges
US7854259B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Jan 8, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1071
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rod guide is provided for use in a rotating rod string (12) for powering a progressive cavity pump (14) for pumping downhole fluids through tubing (16) to the surface. The rod guide includes a rotor sleeve (20) secured to the rod string. The rotor sleeve includes a plurality of axially spaced reduced diameter body portions 22, and a plurality of axially spaced enlarged diameter ridge portions 24. Upper and lower stop surfaces 26, 28 on the ridge portions permit axial movement of the stator sleeve with respect to the rotor sleeve. A stator sleeve (40) positioned over the rotor sleeve, and has a sleeve body (42) with a generally circular configuration with opposing circumferential ends (44, 46) spreadable to position the stator sleeve about the rotor sleeve. A plurality of ribs (48) extend outward from the stator sleeve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.